Surf Forecasts:
Jaconé surf forecast from 17 Aug 2026:
- Best quality surf: Sunday 23 Aug, 9PM (local time) - 3.5ft (1.1m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 3PM (local time) - 7.5ft (2.3m), 12s period, SSW swell with 1,390 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 3AM (local time) - 4.5ft (1.3m), 7s period with E swell.
Best Forecast Surf Conditions for Jaconé this week:
The surf forecast for Jaconé over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 3AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.7m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Jaconé in the next 16 days are 2.3m 12s and forecast to arrive on Monday (Aug 24) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Thursday (Aug 20) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 18th Aug) | 4.5ft (1.3m) 7s |
| Best Surf | 9PM (Sun 23rd Aug) | 3.5ft (1.1m) 12s |
| Most Powerful | 3PM (Mon 24th Aug) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Jaconé over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s go over this stretch in feet and miles per hour.
Looking at Jaconé, we’ve got surf across most of the 16-day run, but you’ve gotta pick the good windows. Water temp is around 73°F, which is normal for this time of year.
The first few days are small but clean. Monday the 17th has a clean 4ft S swell with a moderate offshore wind from the ENE at 15 mph. Combined energy is 449 – moderate. The period is 11 seconds, so that’s a proper groundswell. It’s not big, but it’s clean and lined up. Good for a longboard session.
Tuesday morning the 18th is the first real standout. The swell is 4ft from the E with a short period of 7 seconds, less power. But the wind is pure magic: NE at 6 mph, offshore and glassy. That’s a huge positive. Combined energy is 277, still moderate, but the clean conditions will make it feel way better. This is the pick of the early days.
Wednesday and Thursday mornings are tiny – 3ft – and clean, but the combined energy drops to weak (78 and 76). You can still get wet, but don’t race out for it.
Friday the 21st morning is a proper standout. Swell jumps to 7ft from the ENE, period 8 seconds, combined energy 601. The wind is a light NNE at 6 mph, cross-offshore. That’s a step up in size – at 7ft, it’s getting serious for beginners. For intermediates and above, it’s going to be fun with more push.
The weekend gets messy with rain and onshore wind on Saturday the 22nd. Sunday the 23rd looks better with a 5ft S swell, E wind cross-off at 6 mph, and combined energy 748. A solid afternoon, but not a standout.
Monday the 24th and Tuesday the 25th bring the big stuff – 6ft to 7ft S swell, 11-12 second periods, combined energy 900 to 1200. The wind on Monday is cross-on and rainy, so chop is likely. Tuesday has better cross-off wind, but conditions are still marginal. This is experienced surfer territory.
Wednesday the 26th morning is another top pick. A 5ft SSW groundswell with 12-second period (long-period), NE offshore wind at 9 mph, combined energy 755. That’s powerful and clean. The long period gives more energy and shape, though at a beach break it can run a bit straight. Still, with that offshore wind, it’ll be quality.
Thursday the 27th morning is glassy – NNE wind at 3 mph, 2ft – a magical little window for a dawn patrol on a log.
Toward the end, Sunday the 31st sees a big, powerful S swell – 7ft, 16-second period, combined energy 2615. That is very strong. But the wind is onshore and light, so expect bumpy conditions. Then Tuesday the 1st of September hits 10ft – expert only, with onshore wind. Too big and messy for most.
Best on offer: Tuesday the 18th morning for small, clean, offshore perfection. For size and power, Friday the 21st morning and Wednesday the 26th morning are the ones to circle. Aim for those windows.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 18°C on Mon night). Winds decreasing (fresh winds from the ENE on Mon afternoon, light winds from the NE by Wed morning). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Warm (max 27°C on Thu morning, min 18°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 11 | S 11 | E 6 | E 7 | E 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | ENE 8 | E 8 | SW 5 | SW 7 | SSW 12 | SSW 10 | SSW 9 | SSW 9 | S 11 |
Wave Graph | |||||||||||||||||||||
279 | 227 | 188 | 117 | 97 | 143 | 66 | 146 | 127 | 51 | 82 | 181 | 400 | 80 | 40 | 132 | 701 | 598 | 355 | 249 | 910 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | cross-off | off | off | cross-off | off | off | cross-off | off | cross | on | cross-on | on | on | on | glassy | cross-off | cross-off |
High Tide | 4:57PM0.85m | 5:22AM0.91m | 5:23PM0.81m | 6:13AM0.82m | 5:55PM0.77m | 7:37AM0.74m | 6:40PM0.71m | 10:56AM0.75m | 8:12PM0.67m | 12:01PM0.82m | 11:24PM0.71m | 12:46PM0.89m | 00:16AM0.79m | ||||||||
Low Tide | 11:33AM0.24m | 11:41PM0.26m | 12:15PM0.34m | 00:30AM0.28m | 1:08PM0.44m | 1:31AM0.30m | 2:17PM0.50m | 2:44AM0.31m | 3:41PM0.52m | 4:02AM0.28m | 4:58PM0.48m | 5:10AM0.22m | 5:56PM0.43m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | 1 | — | — | 1 |
Temp °C | 24 | 24 | 19 | 25 | 27 | 22 | 26 | 27 | 23 | 27 | 27 | 21 | 27 | 24 | 20 | 20 | 20 | 19 | 19 | 20 | 19 |
Feels °C | 21 | 20 | 15 | 25 | 26 | 21 | 26 | 27 | 23 | 26 | 25 | 19 | 25 | 22 | 20 | 18 | 17 | 17 | 19 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | E 7 | S 10 | E 7 | E 7 | E 7 | E 7 | E 7 | SE 12 | SSW 11 | E 8 | E 8 | E 8 | SW 7 | SSW 12 | SSW 10 | SSW 9 | SSW 9 | S 11 |
279 | 227 | 135 | 96 | 46 | 120 | 66 | 49 | 54 | 51 | 5 | 24 | 94 | 80 | 32 | 132 | 701 | 598 | 355 | 249 | 910 | |
Swell 2 Height (m) Direction Period (s) | ESE 11 | ESE 11 | SE 11 | S 10 | E 13 | S 9 | S 9 | S 10 | SE 12 | SE 12 | S 10 | SE 11 | SSW 10 | SSW 9 | SSW 9 | SSW 8 | E 8 | E 8 | E 8 | S 13 | E 7 |
12 | 12 | 5 | 71 | 3 | 15 | 7 | 8 | 6 | 6 | 2 | 5 | 33 | 29 | 15 | 14 | 10 | 12 | 5 | 87 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SSE 8 | SE 8 | SE 8 | S 10 | S 10 | S 12 | S 11 | S 16 | S 15 | S 15 | E 8 | ENE 7 | — | S 15 | E 8 | — |
— | — | — | — | — | 7 | 3 | 2 | 2 | 2 | 3 | 2 | 5 | 5 | 4 | 11 | 11 | — | 18 | 5 | — | |
Wind waves Height (m) Direction Period (s) | E 7 | E 6 | E 6 | E 7 | E 7 | ENE 7 | — | E 7 | E 7 | — | E 7 | E 7 | ENE 8 | SW 3 | SW 5 | SSW 8 | — | — | — | — | ENE 7 |
158 | 193 | 188 | 117 | 97 | 143 | — | 146 | 127 | — | 82 | 181 | 400 | 2 | 40 | 104 | — | — | — | — | 9 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 53 | 25 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 258 | 0 | 11 | 58 | 66 | 253 | 253 | 177 | 0 | 0 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Jaconé Surf forecast
The above surf forecast table for Jaconé provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaconé can be found by selecting the local surf guide option on the grey menu. Our Jaconé surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jaconé) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jaconé may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jacone is 14 km (9 miles) from the city of Saquarema. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Saquarema. Saquarema has rooms for a wide range of budgets as well as car hire and transport links.











